Hydrogen Sulfide Affects the Root Development of Strawberry During Plug Transplant Production
2020
Jiangtao Hu | Yali Li | Ya Liu | Dong Il Kang | Hao Wei | Byoung Ryong Jeong
Hydrogen sulfide (H<sub>2</sub>S) is endogenously produced in plant cells and plays an essential role in root development. Given its potential for future agricultural applications, the optimal concentration of sodium hydrosulfide (NaHS, an H<sub>2</sub>S donor) and the potential mechanisms for root development in the strawberry ‘Seolhyang’ were investigated in this study. The results showed that NaHS with a concentration of 1.250 mM had a positive effect on root development in strawberry. Further experiments showed that exogenous NaHS elevated the H<sub>2</sub>S content in the root. The dry root weight was increased by the 1.250 mM NaHS treatment, but was reduced by the hypotaurine (an H<sub>2</sub>S scavenger) treatment. Similar changes were found between H<sub>2</sub>S and soluble sugar contents, indicating that H<sub>2</sub>S enhanced the accumulation of soluble sugar. Therefore, it is suggested that the accumulation of soluble sugar induced by H<sub>2</sub>S is either directly or indirectly involved in root development in strawberry during plug production. Moreover, superoxide dismutase was shown to have contributed to the elevated H<sub>2</sub>O<sub>2</sub> contents. These results contribute to our understanding of the role that H<sub>2</sub>S plays and some of the relevant mechanisms in which H<sub>2</sub>S regulates root development.
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